Core-box



(No Model.)

J. T. HILL & J; P. MGGUIRE,

UNITED STATES PATENT OFFICE.

JOHN T. HILL AND JOHN P. MCGUIRE, OF CLEVELAND, OHIO.

CORE-BOX.

SPECIFICATION forming part of Letters Patent No. 2139,659, dated November 4, 1890.

Application filed July 23, 1890. Serial No. 359,577. (No model.)

To all whom it may concern,.-

Be it known that We, JOHN T. HILL and JOHN P. MCGUIRE, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Core- Boxes; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

Our invention relates to improvements in core-boxes adapted to molding cores that are uniform in cross-section throughout their entire length; and it consists in certain novel features of construction and combinations of' parts, as will be hereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure lis a plan of the stock as it comes from the planer. Fig. 2 is an end view of the same. Fig. 3 is an end view of a core-box for molding cylindrical cores. Fig. 4 is a plan of the core-box. Fig. 5 is an end view of a core-box for molding angular cores.

A represents the stock as it comes from the planer suitable to be cut into sections for making our improved core-box. The stock, as shown in Fig. 1,11as a central longitudinal recess or depression B, equal to one-half of the core to be molded in the core-box. To one side of this central depression and parallel therewith stock A has a groove a, and at the other side of the central depression and also parallel therewith has a tongue a', the

tongue, groove, and central depression ex tending the entire length of the stock and the groove being a trifle larger in depth than the tongue, as shown more clearly at b in Fig. 3.

Vh en a core-box is desired, two sections A A of the desired length are cut from the stock and united by means of the groove and tongue, the tongue and groove of one section fitting nicely the groove and tongue of the other section, as shown in Fig. 3. When the halves or divisions of the core-box are thus united, it will be observed that by Virtue of the groove being a trifle larger in depth that its engaging tongue, the iit of the sections or divisions of the box with each other between the groove and-tongue joint and the core is absolutely perfect; also, the grooves extending the entire length of the core-box are easily cleaned by means of a brush. Hence the danger and objectionable features of the division or parting line showing on the core is practically avoided, and a core uniform in crosssection is always obtained. It will also be observed that after the core is rammed the liability to lift any part of the core is very much less than with the older construction of core-boxes, because after the box is struck or tapped to loosen the core from the box the upper section of the box may be slid or Worked back and forth on a line with the axis. of the core, and in thus loosening itself from the core also acts to sleek or smoothen the core.

We might here remark that the stock from which the core-box is made is slightly. cut away or reduced in thickness between the groove and tongue, respectively, and the sides of the stock, as shown at h in Figs. 2 and 3, so that should by any possibility any sand or dirt lodge between these portions of the re spective sections or halves of the box it will not interfere with the tit of the sections or halves of the box between the tongue-andgroove joints and the core.

What we claim is- A core-box comprising two sections or divisions, each section having a central depression substantially equal to one-half of the core to be molded and having a groove to one side and a tongue at the other side of the central depression, the groove being greater in depth than the tongue and one or both sections of the box being slightly out away between the grooves and tongues, respectively, and the sides of the box, whereby a practically-perfect iit is obtained between the sections of the box at the core, substantially as set forth.

In testimony whereof we sign this specification, in the presence of two witnesses, this 12th day of July, 1890.

JOHN T. HILL. JOHN P. MCGUIRE.

Witnesses:

CHAS. H. DoRER, WARD HoovER. 

